This more traditional concept of natural things which can still be found today implies a distinction between the natural and the artificial, with the latter being understood as that which has been brought into being by a human consciousness or a human mind.

Is it a right people should be free to exercise, or is it a responsibility surgeons should accept only in cases of genuine need? The most easily understood case in which it becomes necessary to distinguish between sex and gender is that in which the external genitalia are removed – when such a thing happens through accident or through deliberate intent, the libido and the ability to express oneself in sexual activity are changed, but the individual’s gender identity may or may not change.

The science of nutrition attempts to understand how and why specific dietary aspects influence health.

Although the concept of consanguinity originally referred to relations by « blood, » many anthropologists have argued that one must understand the notion of « blood » metaphorically, and that many societies understand ‘family’ through other concepts rather than through genetic distance.

Classificatory systems are generally and erroneously understood to be those that « class together » with a single term relatives who actually do not have the same type of relationship to ego.

Morgan, a lawyer, came to make this distinction in an effort to understand Seneca inheritance practices.